工学部_研究紹介_2020_英語版

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DevelopmentofWebServicesforeducation,.Masaaki NiimuraIn the FutureAfter GraduationTwistthefaucetandwatercomesout.Turnontheswitchandlampislit.ItisobviousbutitisNecessarytosociallife.Theyarereferredtoasthe“infrastructure”.NowtheInternetisoneofthe“infrastructure”andvariousserviceshavebeenprovidedontheInternet.Ourlaboratoryhasbeenbuildingnetworkservicesforeducation.Theseservicesareusingthousandsofstudentsinouruniversity.Fromthisservices,Wehavearesearchaboutconstructionandoperationoftheinfrastructureofnetworkservices.Whentheanimation“Laputa”isbroadcast,andhugepeopletweet“BALUS!”ontheTwitter,theTwitterwillbeslowordown.Butitwillberecoversoon.Wethinkthatisaidealsituationofthenetworkservices.Thegoalofourlaboratorywillbetocarryouttheconstructionofagoodnetworkserviceresiliency.WebServicesfrequentlyusessuchassearchengine,videosharingisprovidedbyserverssimilarwaytoourservers.OurGraduatesfindemploymentinsuchareasasainfrastructureengineer.Associate ProfessorWorked at Information Technology Research Center of Nagano Pref. before joining ShinshuUniversity in 2002. Double as e-Learning Center from 2007 to 2011 and develop Learning Management System.Create the Infrastructure ofNetwork ServiceWeconstructserversfromthebeginning,rackmounting,powerandnetworkcabling,installingsoftware.Electrical& Computer EngineeringRevealing the Limits of the Source Coding ProblemsNo intellect, no information. The nature of information is digital and discrete. It is invisible, but we can depict it with mathematical science.Each student handles his/her individual research problem.Discussion with the peers is important tosolve it. We must develop partnership and friendship.MikihikoNishiaraCommunication,broadcast,andreadingandwritingonastoragecanberegardedasprocessesofdeliveringinformationfromsourcestodestinations.Inourlab,weformulatethemathematicalmodelsofvariousinformationsystemsandexplorethetheoreticallimitsofthetheirperformance.Forexample,theimplementationofastreamingsystemrequiresaninvestigationoftradeoffbetweenthebandwidthandthecompression.Althoughmanykindsofsuchproductsarealreadyavailableforusage,thetruthbehindthephenomenonisstillnotclear.Atthestartofdigital-broadcasting,emergencysignalsweresenttogetherwithimagedata.However,itturnsoutthatthecompressionprocessofimagedelaysanemergencysignal,andsotheyareprocessedseparatelynow.Byinvestigatingthetradeoffbetweentheprocessingandthedelay,wecanimprovethetransmissionoftheemergencysignals.Associate ProfessorHe is at the present post since 2007 after a research associate of the university of electro-communications. He is interested in information theory. Also has a career as a system engineer.Inourlab,youcandevelopyourprogrammingskillsbecauseyouwillusecomputersimulationsinyourresearch.Youwillalsoearnthetrustofyourcolleaguesasyoutraintoexpressyourunderstandingtoothers.In the FutureAfter GraduationElectrical& Computer Engineering31